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Solution - Simplification or other simple results
8x^2-9x-7
Other Ways to Solve:
Step by Step Solution
Step 1 :
Equation at the end of step 1 :
(23x2 - 9x) - 7
Step 2 :
Trying to factor by splitting the middle term
2.1 Factoring 8x2-9x-7
The first term is, 8x2 its coefficient is 8 .
The middle term is, -9x its coefficient is -9 .
The last term, "the constant", is -7
Step-1 : Multiply the coefficient of the first term by the constant 8 • -7 = -56
Step-2 : Find two factors of -56 whose sum equals the coefficient of the middle term, which is -9 .
| -56 | + | 1 | = | -55 | ||
| -28 | + | 2 | = | -26 | ||
| -14 | + | 4 | = | -10 | ||
| -8 | + | 7 | = | -1 | ||
| -7 | + | 8 | = | 1 | ||
| -4 | + | 14 | = | 10 | ||
| -2 | + | 28 | = | 26 | ||
| -1 | + | 56 | = | 55 |
Observation : No two such factors can be found !!
Conclusion : Trinomial can not be factored
Final result :
8x2 - 9x - 7
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